Citi announced Monday a digital wallet service that rides the rails of MasterCard's MasterPass product. Citi is the first global bank to introduce its own branded digital wallet in the U.S., according to the press release.

"As online spending continues to grow, we heard from our cardmembers that they want a faster way to make purchases online," Barry Rodrigues, head of Citi enterprise payment solutions, said in a statement. "Citi Wallet delivers this by reducing online checkout to just a couple clicks — whether they are purchasing a sweater, flowers or a new tablet."

Citi Wallet is available to all Citi U.S. consumer credit cardmembers. Users register their card at www.citi.com/citiwallet using the same login credentials used to manage the Citi account online.

Consumers can use Citi Wallet to pay at merchants who accept MasterPass.